a) one should be able to combine lta and ltb files from the
IndianPolar mode into a single FITS file where the USB and
LSB data appear as different sidebands. The lta and ltb files
will have to be merged using ltamerge before input to listscan
and gvfits.

b) A bug where files larger than about 5 GB were not being properly
converted has been fixed.

c) The default IAT to UTC offset has been set to 33 seconds for
observations made after 31/Dec/2005, since the addition of
a leap second is expected on that date. Users will be able
to see this in the log file produced by listscan.